Fix UL inline class delegate loading for tooComplex case (#KT-31950 Fixed)

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/KtUltraInlineLightClass.kt

@@ -21,9 +21,6 @@ class KtUltraLightInlineClass(
     support: KtUltraLightSupport
 ) : KtUltraLightClass(classOrObject, support) {
 
-    override fun getDelegate(): PsiClass =
-        throw IllegalStateException("Cls delegate shouldn't be loaded for not too complex ultra-light classes! Qualified name: $qualifiedName")
-
     override fun getScope(): PsiElement? = parent
 
     private val membersBuilder: UltraLightMembersCreator by lazyPub {
@@ -74,7 +71,7 @@ class KtUltraLightInlineClass(
 
     override fun getOwnFields(): List<KtLightField> = emptyList()
 
-    override fun getOwnMethods() = _ownMethods
+    override fun getOwnMethods() = if (tooComplex) super.getOwnMethods() else _ownMethods
 
     override fun getVisibleSignatures(): MutableCollection<HierarchicalMethodSignature> = PsiSuperMethodImplUtil.getVisibleSignatures(this)
 

compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightClass.kt

@@ -50,7 +50,7 @@ open class KtUltraLightClass(classOrObject: KtClassOrObject, internal val suppor
         )
     }
 
-    private val tooComplex: Boolean by lazyPub { support.isTooComplexForUltraLightGeneration(classOrObject) }
+    protected val tooComplex: Boolean by lazyPub { support.isTooComplexForUltraLightGeneration(classOrObject) }
 
     private val _deprecated by lazyPub { classOrObject.isDeprecated(support) }